Sunk-costs is an economic principle that has wide applications to personal life. If you’re considering the time, money and effort you already put into something too much when making decisions about your future, you’re making bad decisions. Seth claims that if you consider them at all, you’re already at fault. He explains this concept brilliantly in this brief podcast episode.

There are certain behaviors which increase the likelihood that your relationship won’t last forever. Most of them are common sense. Yet it’s easy to forget about them. Remind yourself of the things you should and shouldn’t do in your relationship. Especially when things get rough. This is simple, yet great advise.

A life of 90 years sounds really long. Not so long though, if you change your perspective a little and consider the mark you’re already at. For instance, if you’re past your 20s, you’ll already have spent more than 90% of the time you’ll ever spend with your parents. This article might give you some ideas on how you want to spend what is remaining.